Analog-devices ADSP-2186 Manual de usuario descargar pdf (Pagina 25)

ADSP-2186

REV. 0

–25–

Parameter Min Max Unit

IDMA Write, Long Write Cycle

Timing Requirements:

IKW

IACK Low before Start of Write

0ns

IKSU

IAD15–0 Data Setup before IACK Low

2, 3, 4

0.5 t

+ 10 ns

IKH

IAD15–0 Data Hold after IACK Low

2, 3, 4

2ns

Switching Characteristics:

IKLW

Start of Write to IACK Low

1.5 t

IKHW

Start of Write to IACK High 15 ns

NOTES

Start of Write = IS Low and IWR Low.

If Write Pulse ends before IACK Low, use specifications t

IDSU

, t

IDH

If Write Pulse ends after IACK Low, use specifications t

IKSU

, t

IKH

This is the earliest time for IACK Low from Start of Write. For IDMA Write cycle relationships, please refer to the ADSP-2100 Family User’s Manual.

IAD 15–0

DATA

IKHW

IKW

IACK

IWR

IKLW

IKH

IKSU

Figure 22. IDMA Write, Long Write Cycle

1 2 ... 20 21 22 23 24 25 26 27 28 29 30 31 32

ADSP-2186 1
DSP Microcomputer 1
ADSP-2186 SPECIFICATIONS 13
ADSP-2186 TIMING PARAMETERS 14
TIMING PARAMETERS 17
C2999–6–3/97 32
PRINTED IN U.S.A 32

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